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    A Study on Enhancing the Performance of Thermally Autofrettaged Cylinder Through Shrink-Fitting

    Source: Journal of Manufacturing Science and Engineering:;2016:;volume( 138 ):;issue: 009::page 94501
    Author:
    Kamal, S. M.
    ,
    Dixit, U. S.
    DOI: 10.1115/1.4033083
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Thick-walled cylinders are subjected to autofrettage process to increase their pressure carrying capacity and fatigue lifetime. The thermal autofrettage process is a potential process that can generate beneficial compressive thermal residual stresses at and around the inner radius of the cylinder by employing a radial temperature difference across its wall thickness. This enables the thermally autofrettaged cylinder to withstand more pressure than a nonautofrettaged one. However, due to the limitation on the maximum temperature that the cylinder can be subjected to without the change of material properties, the maximum increase of pressure carrying capacity is also limited by thermal autofrettage. In this work, a methodology is proposed for enhancing the pressure carrying capacity of the thermally autofrettaged cylinder through shrink-fit. This also keeps the main cylinder under compression, thus improving its fatigue strength. The analysis of thermal autofrettage is based on the assumptions of constant axial strain and Tresca yield criterion.
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      A Study on Enhancing the Performance of Thermally Autofrettaged Cylinder Through Shrink-Fitting

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4234591
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    contributor authorKamal, S. M.
    contributor authorDixit, U. S.
    date accessioned2017-11-25T07:17:28Z
    date available2017-11-25T07:17:28Z
    date copyright2016/20/6
    date issued2016
    identifier issn1087-1357
    identifier othermanu_138_09_094501.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4234591
    description abstractThick-walled cylinders are subjected to autofrettage process to increase their pressure carrying capacity and fatigue lifetime. The thermal autofrettage process is a potential process that can generate beneficial compressive thermal residual stresses at and around the inner radius of the cylinder by employing a radial temperature difference across its wall thickness. This enables the thermally autofrettaged cylinder to withstand more pressure than a nonautofrettaged one. However, due to the limitation on the maximum temperature that the cylinder can be subjected to without the change of material properties, the maximum increase of pressure carrying capacity is also limited by thermal autofrettage. In this work, a methodology is proposed for enhancing the pressure carrying capacity of the thermally autofrettaged cylinder through shrink-fit. This also keeps the main cylinder under compression, thus improving its fatigue strength. The analysis of thermal autofrettage is based on the assumptions of constant axial strain and Tresca yield criterion.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Study on Enhancing the Performance of Thermally Autofrettaged Cylinder Through Shrink-Fitting
    typeJournal Paper
    journal volume138
    journal issue9
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.4033083
    journal fristpage94501
    journal lastpage094501-5
    treeJournal of Manufacturing Science and Engineering:;2016:;volume( 138 ):;issue: 009
    contenttypeFulltext
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